Hi all,
Budget bike acquired from local tip for my daughter today. It’s a pinnacle Koa and was a bargain price of £5. Sadly it looks to of spent its life outside and pretty much everything was seized up. I have stripped it and got everything working and greased apart from the freewheel which is proving stubborn. Any tips/ ad ice to get ire off?
by Acceptable-Network63
12 Comments
If it’s siezed enough, you might be able to just spin it off. Otherwise, throw a couple weld tacks on it so it can’t spin. In both scenarios, clamp the freewheel in a well mounted vise and use the wheel for leverage. You have nothing to lose, it’s garbage either way.
penetrating oil? vice? pin spanner?
acetylene torch?
Wow. Impressed.
You will need a pin spanner. It slots in the two holes/indents that you can see. Also I would suggest using some sort of penetrating fluid (Kroil is the best, PB blaster is good, any auto shop will have options) and also try to clean out the holes so your wrench can have a better purchase. Also if I’m not mistaken the freewheel is standard threaded so to remove it you’ll need to turn it counter clockwise. Here’s a photo of a pin spanner, they come in different sizes and I’m not sure what size you may need.
https://preview.redd.it/d6fbiu1rgwyf1.jpeg?width=447&format=pjpg&auto=webp&s=1fd6674573bbef930d593b2baa380bba23cac5a5
Edit: I wish you luck, let the penetrating fluid soak for a while, take it to a bike shop and they might try and do it for you, or at least let you use their pin wrench.
That wheel needs a bath in oil then she should come loose
this looks like a freewheel that was never meant to be removed. those divots in the faceplate for a pin spanner would only serve to expose the bearings and pawls if it were even able to be removed (which at this point would be unlikely).
i would use Boeshield T9 and saturate the freewheel, spray it down and lay it flat; hopefully it will seep into it and loosen up.
ideally, a new wheel.
if it doesn’t work, cutting flat sides into the freewheel with an angle grinder and sticking it into a bench vise might be required.
Fixed gear now.
The way the spokes and teeth align in the pic briefly had me wondering what strange part this was that I’d never seen before.
I can’t get over how the spokes almost perfectly line up with the teeth.
A pin spanner to remove the top of the freewheel – disassemble everything inside – put the remaining piece in vice, and use the rim as leverage to unthread the remaining part of the freewheel
Could you get a clearer image of the inner circle? That’s where the removal tool usually goes, but I think it’s hidden under that silver washer in your image. You’ll just need a freewheel removal tool and a big spanner or vice if so.
Odds are good it’s frozen in place on the wheel in addition to being seized, if you try to remove it the threads on the hub body will likely come with it.. Soak it in penetrating oil ro try to get it moving. If that doesn’t work soak it in vinegar. If that doesn’t work, I’d say a new wheel is in your future.
Your problem seems to be it has those sticks growing out of every tooth. That’s highly unusual